Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 345, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2022.112258
Keywords
Donor-Accptor; Thiazolo[5; 4-d]thiazole; Conjugated polymers; Photocatalysis; H 2 production
Categories
Funding
- National Science and Technology Council [NSTC 108-2218-E-110-013MY3, NSTC 111-2221-E-110-003, NSTC 111-2221-E-007-004, NSTC 111-2628-E-007-009, NSTC 111-2622-E-007-011]
Ask authors/readers for more resources
This article reports a new type of conjugated microporous polymer photocatalyst, which achieves effective separation of photoinduced holes and electrons and absorbs visible light extensively for hydrogen production through synthesis and construction of a new acceptor unit and copolymerization with various donor units.
Recently, significant advancement has been achieved in the rational design of donor-acceptor type conjugated microporous polymers (D-A CMPs) photocatalysts that enable effective separation of photoinduced holes and electrons and absorb visible light extensively for hydrogen production. However, developing a new CMP photocatalyst with high photoconversion efficiency remains a challenge. Herein, we constructed and synthesized for the first time a new tetrabromo-functionalized acceptor 2,5-bis(3,5-dibromophenyl)thiazolo[5,4-d]thiazole (TzTz-4Br), which was further applied to construct several novels semiconducting D-A type CMP photocatalysts by Suzuki-copolymerizing with various donor units for the photocatalytic activity of hydrogen production from water. Here, we used pyrene (Py), N1,N1,N4,N4-tetraphenylbenzene-1,4-diamine (TPA), and 9,9 ' bicarbazole (BC) as the donors. The obtained D-A CMPs exhibit massive thermal stabilities (Td10: equal to 534 degrees C with char yields equal to 75 wt %) and specific surface areas (equal to 988 m2 g-1). Interestingly, in the exclusion of Pt-co-photocatalyst, the TzTz-Py D-A CMP and ascorbic acid (sacrificial electron donor) provide high photocatalytic performance and a hydrogen evolution rate (HER), reaching 3.71 mmol g-1 h-1 (lambda = 380-780 nm). The obtained HER value is one of the largest reported values for a D-A CMP to date. These CMPs appear to have the potential to be beneficial as organic photocatalysts for the prospective photocatalytic H2 generation from water.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available